Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidates (L-R) former U.S. Sen. Rick Santorum, former Speaker of the House Newt Gingrich (R-GA), former Massachusetts Gov. Mitt Romney and U.S. Rep. Ron Paul (R-TX) place their hands over their hearts during the National Anthem at the start of a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Chip Somodevilla/Getty Images)Photo by Chip Somodevilla/Getty Images

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidates, former Speaker of the House Newt Gingrich (R-GA) and former Massachusetts Gov. Mitt Romney shake hands at the end of a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)Photo by Joe Raedle/Getty Images

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidate and former Massachusetts Gov. Mitt Romney talks to his wife Ann Romney during a break in a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidates and former U.S. Sen. Rick Santorum (R-PA) participates in a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidate and former Massachusetts Gov. Mitt Romney participates in a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidate and former Speaker of the House Newt Gingrich (R-GA) participates in a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)(Photo by Joe Raedle/Getty Images)

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Audience members listen to the Republican presidential candidates debate at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Chip Somodevilla/Getty Images)

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidates former Massachusetts Gov. Mitt Romney (L) and U.S. Rep. Ron Paul (R-TX) participate in a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)

Republican Presidential Candidates Second Florida Debate 1/26/2012Republican Presidential Candidates Participate In Second Florida DebateJACKSONVILLE, FL - JANUARY 26: Republican presidential candidates former Massachusetts Gov. Mitt Romney (L) and U.S. Rep. Ron Paul (R-TX) participate in a debate sponsored by CNN, the Republican Party of Florida and the Hispanic Leadership Network at the University North Florida on January 26, 2012 in Jacksonville, Florida. The debate is the last one before the Florida primaries January 31st. (Photo by Joe Raedle/Getty Images)